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The mass m = 3.57 kg is sliding on the frictionless incline of angle 42.7 degrees. A force (F) = 3.24 N is applied horizontally. Determine the acceleration (a) in m/s^2 of the mass on the incline. Use g = 9.8 m/s^2, take parallel to the plane abd up the plane as positive. Express the answer to three significant digits. (FYI: Watch the signs)
A non-uniform bar 5 meters has a center of gravity 1 meters from the heavy end. If it is placed on the edge of a block 1 meters from the light end and a weight of 1497N is placed at the light end of the bar, it will be balanced. What is the weight..
The work performed as a function of time for a process is given by W = at3 , where a = 2.4 J/s3. What is the instantaneous power output at t = 2.6 s
A 1000-kg car is travelling west at 17.0 m/s toward an intersection. What is the angle of their velocity after the collision relative to the east direction
A projectile is fired at 50.0 o above the horizontal. Its initial speed is equal to 107.5 m/s. What is the maximum height reached by the projectile
Mary needs to row her boat across a 200 m-wide river that is flowing to the east at a speed of 1.1 m/s. Mary can row with a speed of 2.4 m/s. What is her speed with respect to the shore
A bungee cord is stretched between two poles with a force of 415 N. What is the velocity of a wave on this bungee cord
A mass sitting on a horizontal, frictionless surface is attached to one end of a spring; the other end is fixed to a wall. Find the value of the spring stiffness constant and mass
A cylindrical copper cable carries a current of 1290 A. There is a potential difference of 1.60 10-2 V, What is the radius of the cable
A camera's flash uses the energy stored in a 270µF capacitor charged to 170V. The current in the charging circuit is not to exceed 23mA. What's the resistance in the charging circuit
A 89.0kg skydiver can be modeled as a rectangular "box" with dimensions 24.0cm \times 44.0cm \times 175cm. What is his terminal speed if he falls feet first
By what percent must one increase the tension in a guitar string to change speed of waves on the string from 327 m/s to 376 m/s.
Parallel conducting tracks, separated by 2.79 cm, run north and south. There is a uniform magnetic field of 1.27 T pointing upward (out of the page). What is the direction of the magnetic force on the rod
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